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为了揭示急斜煤层综放开采围岩运动规律、注水弱化效果和气体迁移规律,保障急斜煤层综放安全开采。采用固-液-气三相介质物理相似模拟装置及声发射(Acoustic Emission,AE)测试系统,分析急斜煤层综放开采过程中煤-水-瓦斯三相介质耦合作用与AE之间的内在规律,揭示了急斜煤层综放开采中,煤-水-瓦斯三相介质运动规律和煤岩失稳3种判别模式,为现场安全开采提供理论依据。
In order to reveal the law of surrounding rock movement, weakening effects of water injection and gas migration rule in fully mechanized top coal caving mining in steep coal seam, it can ensure the safe mining of fully mechanized top coal caving in steep coal seam. In this paper, the physical analogy device of solid-liquid-gas three-phase medium and Acoustic Emission (AE) test system are used to analyze the internal interaction between coal and water-gas three phase medium and AE during the process of fully mechanized top coal caving mining in steep coal seam The law reveals three kinds of discrimination modes of coal-water-gas three-phase medium movement and coal rock instability in fully mechanized caving mining in steep coal seam, and provides a theoretical basis for safe mining in the site.